- Unplug the Dremel power cord from the outlet. Place the Dremel on a flat work surface. Look for the small round seam with a small slot near the rear of the tool. This is the brush cap. There either will be one on each side of the unit or on the top and bottom depending on your model.
- Turn the round brush caps counterclockwise with the screwdriver end of the Dremel tool and remove them from the Dremel. If you do not have the Dremel tool, use a jeweler's flat-head screwdriver.
- Grasp the springs inside the housing, located on each side, with your fingers and pull them out. The brushes are on the end of the springs. Each brush is a square armature that is curved on one end and has a small round pin connecting to the spring on the other end. Pull the brushes of the end of the spring.
- Install new brushes onto the end of each spring. The end of the spring goes around the small round pin on the armature. The curved portion of the brush must point away from the spring.
- Insert the brush end into the Dremel, lining up the curved portion with the curve in the housing. Place the brush caps into the holes and turn them clockwise to secure.
- Plug the Dremel power cord into a wall socket and operate it for five minutes without a load to help seat the brushes inside the unit.
How to Replace Dremel Brushes
Dremel rotary tools have a wide variety of uses. They have a very large selection of bits and attachments for tackling most small jobs around the home. If you use your Dremel frequently, you might find that it begins to operate sporadically. When it begins to make unusual noises or operates at less speed than normal, it is time to change the brushes inside it. This procedure helps prolong the life of your rotary tool. Replacement brushes are available at home improvement centers as well as Dremel dealers.